“Then I saw him loading tote boxes like he was moving and he had his door open and his cat was going back and forth and that's weird because no one lets their cat run in and out of building,” said Thompson.

Police believe Sarkar first murdered his estranged wife, Ashley Hasti. According to the Hennepin County Medical Examiner Office's report, Hasti died from multiple gunshot wounds. Police found her body Thursday in her Brooklyn Park home. Brooklyn Park Police officers believe he entered her home through a broken window. The police department had not received previous calls involving either Hasti or Sarkar.

Hasti was a medical student at the University of Minnesota. Her grandmother says she spoke fluent Chinese and French and also dabbled in stand-up comedy. Hasti met Sarkar when they were both students in California.

Police believe after killing Hasti, Sarkar drove 2,000 miles to Los Angeles. His targets were two professors at UCLA, one being Professor Bill Klug, his PhD advisor, who he suspected of stealing his computer code. But colleagues tell the LA Times Professor Klug bent over backwards to help Sarkar, who was far from a stellar student.